nside_to_level¶
- astropy_healpix.nside_to_level(nside)[source]¶
Find the HEALPix level for a given nside.
This is given by
level = log2(nside)
.This function is the inverse of
level_to_nside
.- Parameters:
- nsideint
The number of pixels on the side of one of the 12 ‘top-level’ HEALPix tiles. Must be a power of two.
- Returns:
- levelint
The level of the HEALPix cells